Electric heater or vaporizer



Feb. 1 1927. 1,616,247

L.E.ASKE

ELECTRIC HEATER OR VPORIZER Filed Sept. 1l, 1925 Wim INI/EN TOR.

L@ QQ# A TTO WEYS.

Patented Feb. 1,1927.

UNITED STATES 1,616,247 PATENT OFFICE..

LEONARD E. ASXE, F DULUTH, MINNESOTA.

ELECTRIC HEATER on varon-izan..

Application led September 11, 1925. Serial No. 55,761.

My invention relates to electric heaters and vaporizers and has for its object the provision of an improved heater suitable for.

use to convert cold hydrocarbon fuel into 'hot fumes in the intake manifold of an internal explosion engige preparatory to starts ing the engine. qWith this and other objects 1n view, it consists of the structures, comparts here# described absorbing pads or sponges. Fig.

. tube and screen.

2, is a vertical section, partly in elevation, approximately on the line E-F of Fig. 4, omitting said adsand omitting the herein-` after describe( sleeve'or tube' 10 and screen 11. Fig. 3, is a vertical section on the line C-D of said Fig. 4, including said pads and Fig. 4, is a top plan view of said invention. Fig. 5, is a bottom plan view of said screen. Fig. 6, is a perspective view of a roup of three absorbing pads or Sponges forming part of said invention. Fig. 7, is a side elevation partly broken away of a carbureter and intake manifold, .showing m heater in operating position therein. Fig. 8, is a side elevation of said tube partly broken away. Fig. 9, is a side elevation of my said invention.

In said drawings, l is a hollow plug of any Vxsuit'able structure, preferably comprising a head vportion and a reduced externally threaded body ortion, containing a chamber 1". Exten ing axially through said head portion into said chamber is a metal binding ost 2 which is electrically insulated from said lug in any suitable manner or by any suitable means, as by a thimble 3, and washers 3, 3", and 3 of insulating material.

Electrically connected at one end to said post in any suitable manner, as b riveting said end in a recess in the head o said post as at 2l is an electric resistance wire 4 which is preferably bent into one or more vertical loo s, as 4, 4", and 4, the opposite end of which loo ed wire is electrically groundedvin any suitable manner or by any suitable means, as by being riveted in a recess in said head portion as at 1", said wires constituting an electric heating element. Mounted on said post are clamping nuts 2b and 2 for connecting an electric circuit wire 5, thereto.- A parallel resistance wire 6, looped in similar manner to the first and spaced therefrom, is preferably secured in like manner to said post and plug head. Inserted between said parallel resistance wires is a refractory absorbent pad or sponge 7 made of any suitable material, for example of asbestos fibre wool, and similar pads 8 and 9 are positioned against the opposite sides of said wires; so that said parallel wires are each positioned between absorbent side walls. If only one resistance `wire is used the number of said walls may be reduced to two, of such thickness as maybe desirable.

A tube or sleeve 10 of any suitable material, as brass, adapted to surround said pads and to hold them in position and press them against said resistance Wires, is thrust at one end into the chamber 1'* of said plug and is secured therein in any suitable manner, as by frictional contact therewith, or by cementing it with shellac. to the inner side wall of said plug. The free end of said tube is preferably provided with an inwardly directed flange 10 to support a screen 11 positioned therein; said screen being adapted to prevent any of said Ipads or materials thereof from falling into the stream of fuel passing from the carbureter to the engine. Said tube has formed therein near its free end a drainage port 10", adapted to prevent the floodingy of the adjacent ends of said pads and adjacent bends of the heating elements by` liquid fuel.l An intake port 10'I is formed in said tube outward of said plug but adjacent thereto for receiving fluid to be heated or fumed, and transversely extending apertures X, Y, are preferably formed through said pads and adapted to communicate with the vorts 10b and l0", respectively, to facilitate t e flow of the fuel or fumes into and out of the spaces between said pads.

The end faces of the outer bends of said heating elements are preferably exposed at the outer ends of said pads, the ends of the pads not being drawn together over them.

G, is a gasket of any suitable material, preferably of metal, as copper.

In operation said heater is extended into a chamber 12 in a housing 12 preferably on the air intake tube 13 of a carbureter 14, from the side walls of which chamber said heater is preferably spaced. The free end of the tube and the adjacent ends of the ads and heatinr elements project upwardy very slightly a ove the floor of said intake plug member and a tube member, an electube, 'so that Said ends wiiinebeaoodea if said chamber 12sl ills with liquid fuel. It

will be understood, however, that if desired said plug may be directed downwardly from the top ofa carbureter throat or other suitable position, which may be found advisable in connection with some forms of carbure# ters,or intake manifolds, or other conductors of fluid to be heated or fumed. Said heater 'may be primed by removing it temporarily an. dipping it in gasoline, but in general Eractice the engine will first be turned over y cranking, or by means ofv an electric starting motor, as is wellA known to the art, a damper or valve 15 in said air intake tube being partl closed. partial vacuum will be created in the air intake end of said tube and a s ray of heavy asoline or` fuel oil will be. rawn from sai carbureter a short distancef-i-nto'they manifold 14T* but will fallv back by avity, and a portion of itwill drop; dghhamber 12", or will drop o n to.-t lieI` floor of'said tube ,13; and ilovv` int'o :said chamber 12 and 'thence throu h they port. An 'elec-.1

into sai 10 and be absorbed by said p s; tric circuit of any suitable structure includ` ing said heating elements then being vclosed the fuel 5in said pads will kbe heated an rfumizedand will follow the loops rof. said wires to their outward bends and i esca e"- `through said screen into the air intake tu e and manifold, mixing withthe incoming air.

'tube having an intake port formed in its This light, yhot mixturewill thenl be drawn into the engine cylinders for starting purses It iis-obvious that myA said invention may be modified in variousy particulars withinv the` spirit and scope of certain of WhatI claim is: f, v 1. lThe .combination of a case comprising a my claims.

tric binding ost extendin thru'gh arwall of one of said) members an insulated therefrom, an electric heating wire electrically connected at one end to said post, and'electrically connected at its opposite end to one of said members, and absorbent means in. contact withsaid wire,

2. The combination of a plug, `an electric I binding ost extending 'through said plug and insu ated therefrom, an' electric 'heating wire electrically connected to saidl post and toground, refractoryv absorbent means positioned against onesid'e of said wire, and adapted to form one side wall for the major part thereof, a tube extending from said plug and surrounding said absorbent means ari the major portion of. said wire, said tube havingan intake port formed therein adapted to forml opposite side walls for the major part thereof, and a tube extending from said plug and surrounding said absorbent means.

' '4. The lcombination of a case comprising a ',plug member and a tube member, an elec- 4tric* binding post extending through said plug Afinexfnber` and insulated therefrom, an

electric :heating Wire 'extending vinto said and'ele'ctrically connected at one end toisa'id postand-at its opposite end to ground,

labsorbent'.means in contact with said wire within said tube, a screen extending across thefree end. of said tube and supported.

thereby,l said tube having a drainage port formed `inyits side near its free end, said ada ted toA communicate with the port in sai tube wall.

In testimony whereof, I hereunto ax my signature.

i 4 LEONARDE. ASKE. 

